OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
OTHER COMPREHENSIVE INCOME (LOSS)
Unrealized holding gains on available for sale securities	$ 9,740	$ 4,915
Reclassification adjustment for (gains) losses realized in income	(66)	10
Income tax effect	(3,917)	(1,959)
Net change in unrealized gains on available for sale securities	5,757	2,966
Reclassification adjustment for amortization realized in income	94	88
Income tax effect	(33)	(34)
Net change in post-retirement obligation	61	54
Change in fair value of derivatives used for cash flow hedges	(2,023)	(815)
Reclassification adjustment for losses realized in income	250	134
Income tax effect	720	261
Net change in unrealized loss on cash flow hedges	(1,053)	(420)
Total	$ 4,765	$ 2,600

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